通过扩展名单击页面上的元素，并在弹出窗口中单击的元素数

Question

我正在尝试创建一个Chrome扩展程序，该扩展程序将在您点击扩展程序上的某个元素时单击网页上的某个元素，并且还会显示在弹出窗口中点击的元素数。以下代码仅用于单击打开的选项卡中的元素。我想添加更多功能，其中弹出窗口显示单击的元素数。需要代码

{
    "manifest_version": 2,
    "name": "Dig Dug",  
    "description": "Label Non-Defective Counts",  
    "version": "1.0",    
    "permissions": ["tabs", "<all_urls>"],      
"browser_action": {         
"default_icon": {
            "19": "icons/19.png",
            "38": "icons/38.png"
        },
        "default_popup": "popup.html"  
    },

    "icons": {
        "16": "icons/16.png",
        "19": "icons/19.png",
        "38": "icons/38.png",
        "64": "icons/64.png",
        "128": "icons/128.png"
    }
}

内容脚本：

function clickNonDefective() {
    var clickNonDefective = document.getElementsByClassName("btn btn btn-outline-success"),
    clickNonDefective = clickNonDefective[clickNonDefective];    
    document.getElementById("submit-non-defective-button").click();
}
clickNonDefective();